Botanik online 1996-2004. Die Seiten werden nicht mehr bearbeitet, sie bleiben als historisches Dokument der botanischen Wissenschaft online erhalten!
A: The two light beams of equal frequency and amplitude (red and blue) meet. Since they are in phase, the forces of the same direction and strength that effect the photons add. The resulting energy level of the photons is accordingly higher.B: If two equal light beams of opposite phases meet, the opposite forces extinguish the light beams (according to D. GERLACH)